Improvement in revolving road-scrapers



`an enlarged scale.`

UNITED STATES,

` Enron.

EELIx A. JACOBs-OECOLUMBUS, onio, Assieivon roEDwAED M. nerr AND LEvI E. DoTY, oE sAME PLAGE.

D IMPROVEMENT IN REVOLVING ROAD-SCRAP-ERS.A

Specification forming part of Letters Patent No. 131,686, dated September 24, 1872.

To all whom it may concern: v

Be it known that I, FELIX A. JACOBS, of Columbus, in the county of Franklin and State y of Ohiohave invented certain Improvements in Revolving Road-Scrapers, of which the following is a specification:

This invention relates to that class of revolving road-Scrapers in which the scoop is locked vto the handles by means of movable detents discharge its load. vMy improvement consists in the employment, with the scoop, bail-bars,

- and handles, all turning upon common centers,y

of amovable detent which is pivoted to a lever-arm ofthe bail-bars, and, slidin gin guides `on the sides of the handles, operates in connection with the fixed catches on the scoop, in the manner briefly stated, and to be more fully n explained hereinafter.

\ Figure lis a plan view. 2 is avertical longitudinal section. Fig. 3 is a section of one of the pivot-bolts and lock-nut, drawn on The same letters of reference are employed in all the figures in the designation of identical parts. 1

The scoop A is constructed with a metallic, bottom suitably curved and sharpened at the l front edge, and is provided with runners which v are formed by extending the side boards below thebottom in the manner shown. Other forms of scoops may be substituted in lieu of the one shown. The `bail-bars B B and handles C C ,i are `pivoted together with theV side boards of the bars F F, which, extending rearward,.are

passed through guides f f on the handles and terminate in springs F F' which bear with their backsagainst the handles. At f f the bars F F have lips or detents of considerable i length, and facing the side boards of the scoop to which the iixed` catches G'Gr are iirmly secured in such a position that the detents may engage with the notches in the `catches when the scoop is resting on the runners or inclined y to the proper position for doing work. The catches are suitably curved,so that the spring detents may ride over them into the notches to lock the rearend of the scoop to thehandles. The scoop and handles turning upon centers different fromthe centers on which the bars F F turn, it follows that, in tilting the machine up at the rear end, the detents and catches will move on each other, and if the machine be tilted up far enough they must eventually disengage each other and thus liberate the scoop from the handles, sothat lit may revolve to dump its load. The detents being pivoted in rear of the bolts D, they will be disengaged at the rearv ends from the catches, but should they be attached to the bail-bars in front of the bolts D, which is an obvious modication, the liberation will occur at the forward ends of the detents. D D are nuts screwed on the projecting ends of the pivot-bolts D to prevent the detachment of the several parts pivoted together .by said bolts. A hole is bored transversely through the nut and the bolt is provided with two elongated slots, d and d1in its screw-threaded end for the reception of a lock- 4 ing-pin, d2. The slots in the bolt stand at right angles to each other, so that the nut may be locked at every quarter turn. Thus ameans i is afforded for connecting the scoop, bail-bars,

and handles, snugly together without clampso arranged with relation to the catches, bailbars, and handles, as that in tilting the rear end of the machine up beyond a certain point it will be liberated from the catch, is not new in revolving-scrapers, as shown in the application of J oab A. Stafford, of even date herewith 5 and I therefore make no claim to this feature broadly; but

What I do claim, and desire to secure by Letters Patent, is l Inarevolvingroad-scraper, thecombination, name V to this specification in the presence of with the scoop, bail-bars, and handles, which two subscribing Witnesses. turn upon common centers, of a movable de-f tent attached to lever-arms of the bail-bars, and operating in connection with the fixed; catches, substantially as set forth. A In testimony whereof I have signed my'- FELIX A. JACOBS.

Witnesses:

J. V. LEE, W. L. J AMIsoN. 

